The contact owns a 2018 Ford Expedition. The contact stated while starting the vehicle, there was a loud clanking sound coming from the vehicle. The check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed with cam phaser failure. The vehicle had been taken to the dealer two previous times for unknown repairs. The vehicle was not repaired for the most recent failure. The vehicle was taken to an independent mechanic and the repair was pending. The manufacturer was made aware of the failure. The failure mileage was approximately 25,000.